genetic inheritance life siences grade 12​

Answers

Answer 1


Genetic inheritance is the study of how genetic traits are passed down from parents to their offspring. This topic is a fundamental part of life sciences and is typically covered in Grade 12 biology courses.

There are two main types of genetic inheritance: Mendelian inheritance and non-Mendelian inheritance.

Mendelian inheritance refers to the way traits are passed down through dominant and recessive genes. Each gene in an organism comes in two copies, one from each parent. If the copies are the same (e.g., both dominant or both recessive), the trait will be expressed in the offspring. If the copies are different (one dominant and one recessive), the dominant trait will be expressed, and the recessive trait will be hidden.

Non-Mendelian inheritance refers to genetic traits that are not controlled by a single gene or follow a simple dominant/recessive pattern. For example, sex-linked traits (such as color blindness) are controlled by genes on the X chromosome and can be passed down from a carrier mother to her sons.

Other factors that can affect genetic inheritance include epigenetics (modifications to DNA that affect gene expression), gene linkage (when genes on the same chromosome are inherited together), and polygenic inheritance (when traits are controlled by multiple genes).

Overall, the study of genetic inheritance is crucial for understanding how traits are passed down from generation to generation and can help us better understand the causes and treatments of genetic disorders.

Related Questions

Complete the sentence. Green revolution agriculture uses genetically modified crops that are blank productive and blank resistant to pests
O Less, less
O Less, more
O More, less
O more, more

Answers

The complete sentence is Green revolution agriculture uses genetically modified crops that are more productive and more resistant to pests which is option D.

Complete sentence explained.

A complete sentence is a sentence that contains a subject and a predicate and expresses a complete thought. It typically includes a noun or pronoun as the subject, a verb as the predicate, and often includes objects, complements, and modifiers that provide additional information or description. A complete sentence can stand on its own and does not require additional information to make sense.

The sentence means that Green revolution agriculture, which is a type of modern agriculture, uses genetically modified crops that have been engineered to be more productive, meaning they can produce more food per unit of land or resources, and more resistant to pests, meaning they are less likely to be damaged or destroyed by insects or other pests

Learn more about complete sentence below.

https://brainly.com/question/27952797

#SPJ1

flower structure and functions and cross pollination

Answers

The flower is the reproductive structure of angiosperm and has four main parts: the calyx, corolla, stamens, and pistil. Cross-pollination occurs when pollen from one flower fertilizes the ovules of another flower.

The calyx and corolla protect the reproductive organs and attract pollinators with their colors and fragrance. The stamens produce pollen, which contains the male gametes, and the pistil contains the female reproductive organs, including the ovary, style, and stigma.

The functions of flowers are to attract pollinators, facilitate the transfer of pollen between flowers, and produce seeds for the next generation of plants. Pollinators can be insects, birds, bats, or other animals, and they are attracted to flowers by their colors, fragrance, and nectar. Cross-pollination benefits genetic diversity, which can increase a plant's chances of survival in changing environments. It also allows for the production of hybrid plants with desirable traits.

To learn more about pollination follow the link:

https://brainly.com/question/13260796

#SPJ1

The correct question is:

Explain the flower structure, its functions, and cross-pollination.

How do plant leaf cells and animal cells differ in their metabolic capabilities?

Answers

Answer:

Explanation:

Plant leaf cells and animal cells differ in their metabolic capabilities due to the presence of different organelles. Both plant and animal cells have mitochondria, which break down sugar to make energy for the cell. However, only plant cells have chloroplasts, which are necessary for photosynthesis. During photosynthesis, plants use sunlight to make sugar from carbon dioxide and water

Christians should not use fossil fuels because they pollute the earth.
True
False

Answers

Answer: False. The statement is not entirely true or false, and it depends on an individual's interpretation and beliefs. While some Christians may hold the view that the use of fossil fuels is incompatible with their responsibility to care for the earth and its inhabitants, others may not share this view.

Many Christian teachings emphasize the importance of stewardship and caring for the environment, and some Christians may believe that using fossil fuels contributes to environmental degradation, pollution, and climate change, which can harm both humans and other living beings. However, other Christians may argue that the responsible use of natural resources, including fossil fuels, can be a necessary means of sustaining human life and promoting economic development.

Ultimately, the question of whether Christians should use fossil fuels is a complex ethical and theological issue that may depend on various factors, including an individual's interpretation of scripture, their environmental values, and their understanding of the role of technology in human society.

Explanation:

This question: 1
point(s) possible
This passage, Aquatic Food Supplies, is from a geography textbook
Review the passage as needed
Subr
What is the implied meaning of this statement from paragraph 47
A deluge of modern, highly capitalized fishing threatens to drown traditional fisherman in a sea of despair
A. Certain hardshes and experiences are shared by people who practice traditional fishing methods
B Severe storms present a great risk to people who practice traditional fishing methods
Nex

Answers

This passage shows that certain difficulties and experiences are shared by people who practice traditional fishing methods, as shown in option A.

What does the passage show?Fishing methods have evolved and modernized.Traditional fishing has lost space in the market.

The text shows how the techniques and resources used to promote fishing have been modernized and become faster and more efficient to contain the demands of the capitalist market.

Traditional fishing has not been able to keep up with this evolution, which has created difficulties for traditional fishermen who have traditional fishing as their main source of income.

Learn more about fishing:

https://brainly.com/question/31264720

#SPJ1

Draw a model showing what would happen if poison blocked our cell ability to make tRNA (Specifically draw a model) ​

Answers

Answer:

Here is a model showing what would happen if poison blocked our cell ability to make tRNA:

[Image of a cell with a large red X over the tRNA]

tRNA is a type of RNA that is involved in protein synthesis. It helps to carry amino acids to the ribosome, where they are assembled into proteins. If poison blocked our cell ability to make tRNA, it would prevent us from making proteins. This would lead to a variety of health problems, including:

* Muscle weakness

* Weight loss

* Fatigue

* Hair loss

* Skin problems

* Infections

* Death

In severe cases, blocking tRNA production can be fatal.

Here is a more detailed explanation of how tRNA works:

When a cell needs to make a protein, it first reads the DNA code for that protein. This code is transcribed into messenger RNA (mRNA). The mRNA is then translated into a protein by the ribosome.

The ribosome reads the mRNA codon by codon. Each codon is a sequence of three nucleotides that codes for an amino acid. The ribosome uses tRNA to bring the correct amino acid to the ribosome for each codon.

The tRNA molecule has an anticodon that matches the codon on the mRNA. The anticodon is a sequence of three nucleotides that is complementary to the codon on the mRNA.

The tRNA molecule binds to the ribosome at the codon that it matches. The amino acid that is attached to the tRNA is then added to the growing protein chain.

This process continues until all of the codons on the mRNA have been translated. The ribosome then releases the protein chain.

If poison blocked our cell ability to make tRNA, it would prevent the ribosome from getting the correct amino acids for each codon. This would result in the production of faulty proteins. These faulty proteins could damage the cell or even kill it.

The faster alcohol is consumed, the faster it reaches the
Brain
Liver
Stomach
Bloodstream

Answers

it reaches the bloodstream
faster

Answer:

Bloodstream

Explanation:

When you drink alcohol, it enters your bloodstream and spreads throughout your body. It can reach your brain in just five minutes. Alcohol can make your blood vessels wider, which can cause you to feel warm and blush. If you drink too much alcohol too quickly, it can be dangerous and affect your breathing, heart rate, and body temperature.

Write a scientific argument to Alex Young that addresses the question: What caused the stickleback population to have less armor and become faster?

Answers

The stickleback population's reduced armor and increased speed can is due to natural selection because the sticklebacks with less armor and greater speed were better adapted to their environment resulting in greater survival rates and higher reproductive success.

What is natural selection?

Natural selection is the variation in individual survival and reproduction brought on by phenotypic variances.

Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success. Over time, this process leads to the evolution and divergence of species.

Learn more about natural selection at: https://brainly.com/question/30403153

#SPJ1

Taking on the attitudes of others because of real or imagined pressure is:
A. social cognition
B. minority influence
C. deindividuation
D. conformity

Answers

The answer is D. Have a great day!

Select the correct answer.
Which phrase best describes "impotence" in men?

Answers

Answer: B

Explanation: Impotence or erectile dysfunction means that the male cannot maintain an erection, thus cannot do ejaculation either.

The theory, now generally held, that an embryo develops progressively from an undifferentiated cell is called​

Answers

Answer:
Epigenesis

Explanation:
development of a plant or animal from an egg or spore through a series of processes in which unorganized cell masses differentiate into organs and organ systems.

4. Identify Patterns. Scientists studying great white sharks estimate that a population of 15,000 seals supports fewer than 100 sharks during the summer. What conclusion can you draw about the relationship of energy flow and the number of top-level consumers? Explain.​

Answers

The link between energy flow and the number of top-level consumers in an ecosystem is illustrated by the modest number of great white sharks in proportion to the enormous number of seals in this scenario.

What is the conclusion?

Seals are the main eaters in this ecosystem, consuming plankton and tiny fish from lower trophic levels. The highest tier of consumers, great white sharks eat seals.

The amount of energy available to the following trophic level declines as energy moves up the food chain. This is brought on by energy losses from respiration, waste, and improper digestion.

Learn more about consumers:https://brainly.com/question/15869639

#SPJ1

Which mode of nutrition do the cotton like threads formed on the moist bread have

Answers

Answer:

Heterotrophic mode of nutrition

Explanation:

Describe at least two challenges that cactuses had to overcome that cattails did not.

Answers

Answer:

Possible challenges include: Climate: Deserts are arider than swamps, so there is less humidity in the air and less water in the soil. Reproduction: Cactuses are often not densely populated, whereas cattails occur in groups.

QUESTION 2 Why not a Tundra biome?​

Answers

The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert. Tundra is found in the regions just below the ice caps of the Arctic, extending across North America, to Europe, and Siberia in Asia.

Question 3 of 25
How are genes and proteins related?
O
O
O
A. Genes and proteins are both made of DNA.
B. Proteins are made from instructions in genes.
C. Proteins are made of parts of genes.
D. Proteins are used to build genes.

Answers

Proteins are made from instructions in genes and carry out various biological functions.

(B). Proteins are made from instructions in genes.

Genes and proteins are closely related in the process of protein synthesis. Genes contain the instructions for making proteins, which are complex molecules made up of long chains of amino acids.

The sequence of bases in DNA determines the sequence of amino acids in a protein.

When a gene is transcribed into RNA, the information is then translated into a specific protein by the ribosomes in the cell.

The resulting protein can then carry out a variety of functions, such as catalyzing chemical reactions, providing structural support, or transmitting signals within the body.

Therefore, proteins are made from instructions in genes and are essential to many biological processes.

For more such questions on genes, click on:

https://brainly.com/question/1480756

#SPJ11

Complete the sentence. Noise pollution

O raises hearing acuity

Oincreases stress hormones

lowers blood pressure

leads to complete deafness

Answers

Answers:

Increases stress hormones

Explanation:

Choice one does not work because noise pollution does not increase hearing acuity, it lessens it.

Choice three does not work because noise pollution is shown to raise blood pressure.

Complete deafness is rare, so I would not choose the last choice.

What causes the "rumbling" of thunder?
Lightning strikes in waves, creating multiple rounds of thunder.
The sound waves behave differently within air that is high in humidity.
The sound waves bounce off trees, buildings, and other objects after the lightning is struck.
Thunder bounces off the bottom of the thunderstorm cloud.

Answers

Lightning strikes in waves, creating multiple rounds of thunder.

Which of the following landforms results from erosion by glaciers and flowing water

Answers

A cirque is a landform that results from erosion by glaciers and flowing water. A cirque is a bowl-shaped hollow that is located at the head of a glacier valley, with a steep back wall and a shallower slope towards the front. Glaciers erode rock by plucking and abrasion, and cirques are formed when the ice plucks out the rock at the head of a valley, leaving a hollow depression. Water from melting glaciers and snow collects in the cirque and may form a lake. Over time, the cirque may erode further, creating a larger basin-shaped valley called a glacier trough.

what is gastulaton stage in development of a chick?

Answers

Answer:

Gastrulation is an early stage in embryo development in which the blastula re-organizes into the three germ layers : the ectoderm, the mesoderm and the endoderm.

Explanation:

hope this helps:) !!!!!

What is the difference between extant and extinct?

Answers

Answer:

Extinct refers to species no longer in existence, having no living representatives – gone everywhere.

Extant The species is known or thought very likely to occur currently in the area.

Describe how impluses are transmitted across the synapse

Answers

Answer:

1) An electrical impulse travels along an axon of the presynaptic neuron.

2) When the impulse reaches the nerve-ending, it releases chemical messengers called neurotransmitters.

3) These chemicals diffuse across the synapse and bind with specific receptor molecules on the membrane of the next neuron.

Hope this helps :)

Pls brainliest...

The long term solution to a problem with blood pressure (MAP too high or too low) involves a long term change in:

a.) total peripheral resistance
b.) heart rate
c.) fluid volume
d.) sympathetic activation

Answers

The long term solution to a problem with blood pressure (MAP too high or too low) involves a long term change in total peripheral resistance.

Hence option a is correct.

Total peripheral resistance (TPR), also referred to as systemic vascular resistance (SVR), is the amount of pressure that the body's vasculature places on the blood in circulation.

The ratio of the MAP calculated using ModelFlow divided by the CO value is used to calculate total peripheral resistance (TPR). TPRest was calculated as the product of cardiac output in litres per minute (L/min) and mean arterial pressure in millimetres of mercury (mmHg).

The blood and the vessels in the body work according to the same principle. This is referred to as "total peripheral resistance" (TPR) in the context of the heart. Pressure will rise if the space available for blood to pass through is less.

To know about peripheral

https://brainly.com/question/13047241

#SPJ1

Gel Electrophoresis: please fill in the blanks! ​

Answers

Based on their size, shape, and electrical charge, molecules including DNA, RNA, and proteins may be separated and analysed using the gel electrophoresis technique.

It entails applying a charged electric field to a gel or matrix, causing the molecules to move through the gel and towards the anode, or positive electrode.

Smaller molecules pass through the gel more quickly than bigger ones, therefore they are segregated depending on their size and charge. Additionally, compared to molecules with a lower charge, those with a higher charge will move through the gel more quickly.

Gel electrophoresis is an effective method for examining and contrasting the sizes and charges of molecules. It may be used to recognise and describe many compounds, including DNA and proteins.

Learn more about  molecules at:

https://brainly.com/question/19922822

#SPJ1

A gene found in naturally occurring soil bacterium, Bacillus thuringiensis (8t), contains a protein that kills certain insects. Scientists
have genetically modified certain organisms such as corn, potatoes, and cotton by introducing the Bt gene into their DNA in order
for these plants to have this desired trait. Which question were the scientists most likely trying to answer?
A. How can farmers produce more nutritional crops?
B. How can farmers use less insecticides on their crops?
C. How can farmers reduce the amount of land needed to grow their crops?
D. How can farmers reduce the amount of fertilizers they apply to the soil for
their crops?

Answers

Answer:

B. How can farmers use less insecticides on their crops?

Explanation:

The scientists were most likely trying to answer question B, "How can farmers use less insecticides on their crops?" The Bt gene from Bacillus thuringiensis produces a protein that is toxic to certain insects, making the plants resistant to insect pests. By introducing this gene into crops, farmers can reduce the need for chemical insecticides, which can be harmful to the environment and human health. This approach is an example of genetic engineering for pest control, which has the potential to increase crop yields while reducing the use of harmful chemicals.

The phospholipids are
molecules while fat molecules are
A. amphoteric, polar
C. nonpolar, amphipathic
E. peripheral, hydrophilic
B. polar, nonpolar
D. amphipathic, hydrophobic

Answers

Answer:

Fat molecules are also called triacylglycerols, or, in bloodwork done by your doctor, triglycerides. In the human body, triglycerides are primarily stored in specialized fat cells, called adipocytes, which make up a tissue known as adipose tissue^1

1

start superscript, 1, end superscript. While many fatty acids are found in fat molecules, some are also free in the body, and they are considered a type of lipid in their own right.

Melanie is researching whether some dinosaurs had feathers. She read the following paragraph in an article.

Evidence from various scientific disciplines suggests that certain types of dinosaurs, namely those that fall within the clade Therapoda, may have
had feathers. Theropod dinosaurs share many features with modern birds, including three-toed limbs, scales, hollow bones, and the number of
holes in their skulls. Both laid eggs, and both breathed in the same way, which is very different from the way that most terrestrial animals breathe.
These features, and a number of fossil finds, suggest that birds are modern-day descendants of dinosaurs.

Based on the paragraph, what would be the best way for Melanie to narrow the focus of her research?



While researching the question of whether dinosaurs had feathers, Melanie decided to focus on

A. The animals that came before the dinosaurs and may have led to both dinosaurs and birds.

B. The differences in the way dinosaurs in mammals breathe.

C. Theropod dinosaurs in the connection do birds.

D. Egg, laying animals, and how they relate to birds.

Answers

While researching the question of whether dinosaurs had feathers, Melanie decided to focus on

C. Theropod dinosaurs in the connection do birds.

How to find the correct option

The paragraph implies that specific dinosaurs, belonging to the Theropoda group, could have potentially had feathers and revealed comparable traits with modern avians.

Consequently, Melanie's research would be best served delving further into the relationship between these Theropod dinosaurs and birds.

Alternative A neglects to establish any correlation between feather existence in dinosaurs, while alternative B has no significance as a determining factor for establishing dinosaur plumage. Although option D does possess some relevance, it fails to specifically address the crucial link connecting Theropod creatures with their avian counterparts.

Learn more about dinosaurs at

https://brainly.com/question/24373044

#SPJ1

Answer: its D egg laying animals and how they relate to birds

Explanation:

Di-Hybrid Crosses - you will be looking at 2 traits at the same time. Your goal will be to determinewhether two genes are on the same chromosome or not, and how far apart they are. Before you set outto solve the problem, let's do a warm up cross.Warm up Cross. Cross a wild type female with a male - design - Bristles -spineless and Wing shape -dumpy.
1.Based on your F1 resultsmake a claimabout how the dumpy and spineless bristles are inherited(e.g. autosomal, dominant, etc.). Justifyyour claim.

Answers

Based on the cross between a wild type female and a male with the genotype Bristles-spineless and Wing shape-dumpy, the F1 generation will all be heterozygous for the two traits: Bristles-spineless/+ and Wing shape-dumpy/+.

How to explain the information

If the inheritance of these traits is autosomal, meaning they are located on non-sex chromosomes, then we can make the following claim that the inheritance of both traits is recessive.

If both traits are recessive, then the wild type female parent would have to be homozygous dominant for both traits (Bristles+/+ and Wing shape+/+) and the male parent would have to be homozygous recessive for both traits (Bristlesss and Wing shapedpdp).

Learn more about genotype on

https://brainly.com/question/902712

#SPJ1

List three limited resources and three non renewable resources.

Answers

Answer:

Nonrenewable Resources

Oil

Natural Gas

Coat

Nuclear Energy

Metals and Minerals*

Renewable Resources

Sun

Wind

Water

Geothermal and Biomass

Metals and Minerals*

Explanation:

The book named Principles of Geology, which influenced Darwin, was written by​

Answers

Answer:

Principles of Geology, which influenced Darwin, was written by Charles Lyell

Explanation:

Other Questions
What contributation did AL-Khwarizmi make to the world of mathematics The population of Ghana was 5,000,000 in 1957. The population in 1998 estimated to be 17, 000,000. Find the percentage increase in the population What is ONE way in which the author builds suspense throughout the play? From "sorry wrong number" what is the aproximate length of the base triangle ? Which measurement is closest to the circumference of circumference of the parachute in feet Identify and describe each quadrilateral. Write square, rectangle, rhombus, trapezoid, or parallelogram on the blanks provided before each number. _________1. Has one pair of parallel sides. _________2. Has two pairs of parallel sides and its opposite sides are equal. _________3. Is a parallelogram and four right angles and four equal sides. _________4. A parallelogram and four equal sides (a slanted square)_________5. A parallelogram that has four right angles and it's opposite sides are parallel. To prevent errors in bioelectrical impedance analysis, it is best to avoid ________ prior to measurement -9 -7 -5 sequence name pls Gloria buys last year's best-selling novel, in hardcover, for $18.70 . This is with a 15% discount from the original price. What was the original price of the novel? How would an increase in the number of birds affect the number OF mice. Explain ur answer A product has a market estimate of 97,000 components and requires three processing steps (turning, milling, and drilling), having defective estimates of d1 = 0.04, d2 = 0.01, and d3 = 0.03. the market estimate is the output required from step 3. calculate the input flow to each step. While at the parent-teacher conference, murphys teacher mentions that the apollo program-the same program that landed humans on the moon-was just propaganda to convince the soviet union to bankrupt themselves trying to do the same. the reason for this was to encourage children to take care of their own planet, rather than wasting precious resources day dreaming of leaving it. which side of the fence would you sit on? would you look for ways to save earth and our ability to stay there, or would you look to the sky, and find a new plant to live on? why? interstellar movie Supposing you won in a lottery, what _____ the money at? In the Roman Republic, a dictator was a "temporary magistrate with extraordinary powersit was resorted to only in times of military, and later internal, crises. The dictator's term was set at six months, although he customarily laid down his powers as soon as the crisis passed" (Encyclopaedia Britannica). Reflect upon the rise of dictators like Hitler, Stalin, and Mussolini. How were they different from the Roman dictator? How were they similar? What is the danger of giving a government unlimited power, even during a crisis? Prepare garzon company's journal entries to record the following transactions for the current year. january 1 purchases 7.5% bonds (as a held-to-maturity investment) issued by pbs at a cost of $42,400, which is the par value. june 30 receives first semiannual payment of interest from pbs bonds. december 31 receives a check from pbs in payment of principal ($42,400) and the second semiannual payment of interest. calculate the total annual fixed costs of operating the exchange tower store and online store. if the exchange tower store were to close, how much funding could then be allocated toward influencer marketing for the 2020/21 fiscal year? the nurse is providing education to a client who has advanced to a soft diet after gastric bypass surgery. the electronic health record (ehr) indicates the client had a fecal impaction two days ago and has not moved their bowels since. which food item will the nurse recommend be added to their diet? Information that is presented after an event can be incorporated into our memory for the event. this illustrates the dynamics of group of answer choices proactive interference. anterograde amnesia. memory construction. repression. Shawn is an 8-month-old infant who was just startled, causing a flood of stress hormones which could result in shawn being easily angered, quick to cry, or hypervigilant. this is an example of which principle Which structure serves to increase the speed with which a signal travels within a neuron?.